a{
    text-decoration: none;
}

img{
    float: left;
}

ul{
    padding: 0;
    margin: 0;
}

li{
    list-style-type: none;
}

.carousel{
    width: 654px;
    height: 940px;
    margin: 0 auto;
    background-color: #444;
    position: relative;
    overflow: hidden;
}

.prev{
    width: 30px;
    height: 30px;
    background-image: url("/day_4/img/icons8-left-30.png");
    position: absolute; /* 绝对定位 */
    top: 50%;
}

.next{
    width: 30px;
    height: 30px;
    background-image: url("/day_4/img/icons8-right-30.png");
    position: absolute; /* 绝对定位 */
    left: 624px;
    top: 50%;
}

.calculate {
    width: 654px;
    height: 100px;
    position: absolute;
    bottom: 50px;
}

.calculate ul{
    width: 150px;
    background-color: red;
    margin: 0 auto;
}

.calculate ul li{
    width: 15px;
    height: 15px;
    background-color: red;
    cursor: pointer;
    float: left;
    margin-right: 10px;
    border-radius: 50%;
    opacity: 0.5;
}
